The Dog Star Pact — An AI Otome Roleplay (Wizarding Fugitive Slow Burn)
Final Product: The Dog Star Pact
Cover
The 16:9 key art: Sirius Black stands under a rain-lit London streetlamp with the black dog at his side, the Thames and the gothic skyline dissolving into cold blue haze behind him, and one warm curtained window at the edge of the frame — the flat that let him stay. Painted for this route in the world's own refined semi-realistic painterly direction with GPT Image 2.
Gameplay
Actual gameplay at 1280×800: Sirius's rain-soaked portrait holds the left panel while the narration sets the three weeks of the dog on your step. His first line — "Please. You are the only one who can see me for what I am." — lands above the Meadows paragraph, with Continue and the free-text composer waiting below.
Gameplay
Actual gameplay with the session menu open: Save, Load, Restart and Roleplay Settings sit over the dimmed rainy street. Saves are checkpoints in the three weeks; Restart puts you back at the door with the dog still bleeding and the man still waiting to see whether you scream.
Gameplay
Actual gameplay with the premise expanded and an action in the composer: "Show me the dog again. I want to see if the grey eyes are the same." The free-text box is the whole interface — the story answers what you actually say, not a menu choice.
The Dog Star Pact is a playable wizarding fugitive romance — a stray-dog slow burn written and directed live by AI, running in your browser with nothing to install.
For three weeks a black dog has slept outside your flat — on the step, in the rain, always on the same side, never once barking. You have started leaving food out. You have started talking to it. Tonight it is on the step with a tear in its shoulder, and standing in the rain behind it is a man with the same grey eyes. Sirius Black is the most wanted fugitive in the country. Every paper has printed his face; none of them has printed it looking like this.
What follows is not a rescue scene. It is an investigation: a convict who says Peter Pettigrew was the Secret-Keeper, a Daily Prophet archive with a witness no one ever named, and an Auror called Meadows who has turned down two promotions to keep hunting. Shelter him and the hunt closes in. Ask the wrong question and he leaves to protect you — taking the only witness to his innocence with him. His Animagus form has been your quiet, loyal companion for three weeks; the man in the rain is asking you to decide which version of him is real. Play The Dog Star Pact →
Game Features
- Live LLM Narrative Direction — nothing here is a fixed script. A deepseek-v4-flash agent reads your action, keeps Sirius in his own low, husky, dangerously amused register and writes the next beat, the subtext and the silence after it as you play. The same agent planned the premise, the rain-soaked opening, the three investigable threads, four locations and four story directions from a single world prompt.
- A Cast That Stays In Character — Sirius teases when he is frightened and goes quiet when he means something; he never begs twice. Auror Meadows stays friendly in the way a hand on your shoulder is friendly. The narration knows what the dog has been to you and never decides for you. No assistant tone, no drift.
- Answer In Your Own Words — the free-text action box is the whole interface. Ask Sirius to walk you through the night the Potters died. Tell Meadows the dog is a stray and watch him smile. Read your grandmother's letter and then lie about it. Every typed beat lands differently, and the story remembers what you chose.
- Three Investigable Threads — What really happened the night the Potters died? (the main thread: a witness never named, a body never recovered, only a finger), Why is Auror Meadows so invested? (a case file thicker than protocol allows, a partner no one mentions) and Why did the dog choose you? (a photograph of a young man with grey eyes in your grandmother's things). Each carries clues, actions, discoveries, a reveal and consequences that change the ending you can reach.
- A Route Built On Evidence — shelter him and the choice becomes active protection; investigate the truth and Pettigrew's trail leads to Hogwarts; clear his name and Meadows becomes the pivot between hunter and ally; hesitate and Sirius leaves to protect you, taking the only witness with him. Refusal, grief and forgiveness are written as real outcomes, not failure states.
- Two Cut-Out Sprites, Three Painted Scenes, Zero Install — two Sirius portraits were background-removed with <span class="ml-model-badge">birefnet-general</span> into true transparent PNGs, so the fugitive in the burgundy velvet and the fugitive in the rain-soaked leather stand cleanly over three painted settings — your flat, the town square and the Prophet archive. The whole story is a mobile-first page: free to start, nothing to download.
Character Sprites
Sprite
Sirius Black — the atom portrait: long dark waves, fair skin, amused dangerous grey eyes with double catchlights, a wine-red velvet coat over a charcoal shirt and silver rings. The aristocratic runaway who makes rule-breaking feel like an invitation. Cut out with BiRefNet into a true transparent PNG.
Sprite
Sirius Black, the version at your door: soaked black hair, torn leather, rain on his shoulders and the streetlamp rimming one side of his face. This is the man the papers never printed — the one who waited to see whether you would scream. Cut out with BiRefNet, ready to composite over any scene.
Production Process Breakdown
Stage 1: World Buildingdeepseek-v4-flash
The world "Handsome Men in the Galaxy" set the house art direction — refined semi-realistic painterly, value-defined contours, organised shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. For this route the AI narrowed it into a wizarding register: rain-blue exteriors against one amber lamp, worn leather and velvet, a gothic skyline kept soft behind the faces.
The world "Handsome Men in the Galaxy" set the house art direction — refined semi-realistic painterly, value-defined contours, organised shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. For this route the AI narrowed it into a wizarding register: rain-blue exteriors against one amber lamp, worn leather and velvet, a gothic skyline kept soft behind the faces.
Stage 2: Roleplay & Story Draftingdeepseek-v4-flash
From the one-line premise — a stray black dog has been sleeping outside your flat, and tonight the man on your doorstep has the same grey eyes — the agent wrote the playable spine: a four-link relationship graph, three investigable threads with their clues and consequences, four locations, four story directions and the default opening with Sirius's first line and Meadows's too-friendly visit.
From the one-line premise — a stray black dog has been sleeping outside your flat, and tonight the man on your doorstep has the same grey eyes — the agent wrote the playable spine: a four-link relationship graph, three investigable threads with their clues and consequences, four locations, four story directions and the default opening with Sirius's first line and Meadows's too-friendly visit.
Stage 3: Key Art & Cast Portraitgpt-image-2
The 16:9 key art was painted with GPT Image 2 from the existing Sirius portrait as a reference, so the face stays the same as it is inside the route: the man and the dog under one streetlamp, the Thames behind them, a warm flat window at the frame's edge. The portrait itself was kept as the atom image and reused as the second sprite source.
The 16:9 key art was painted with GPT Image 2 from the existing Sirius portrait as a reference, so the face stays the same as it is inside the route: the man and the dog under one streetlamp, the Thames behind them, a warm flat window at the frame's edge. The portrait itself was kept as the atom image and reused as the second sprite source.
Stage 4: Scene Paintinggpt-image-2
Three 16:9 backgrounds were painted to stage the investigation: your flat at night with the dog bed empty by the radiator, the town square at dusk with two Ministry umbrellas under the clock tower, and the Prophet archive with one green lamp over an open ledger. Each keeps the lower third calm and uncluttered so dialogue and sprites can sit over it without fighting the art.
Three 16:9 backgrounds were painted to stage the investigation: your flat at night with the dog bed empty by the radiator, the town square at dusk with two Ministry umbrellas under the clock tower, and the Prophet archive with one green lamp over an open ledger. Each keeps the lower third calm and uncluttered so dialogue and sprites can sit over it without fighting the art.
Stage 5: Transparent Cut-Outbirefnet-general
Both Sirius portraits were background-removed with BiRefNet into true transparent PNGs, so the character composites cleanly over any painted scene — no grey box, no matte edge — and can be swapped mid-scene without re-lighting the background.
Both Sirius portraits were background-removed with BiRefNet into true transparent PNGs, so the character composites cleanly over any painted scene — no grey box, no matte edge — and can be swapped mid-scene without re-lighting the background.
Stage 6: In-Browser QA & Publishingagent-browser
The live share page was checked in-browser at 1280×800: the opening beat, the session menu and the expanded premise with a typed action were captured as the three gameplay views on this page. Sprite scale, text contrast in dark and light themes, and the play link were verified before publishing.
The live share page was checked in-browser at 1280×800: the opening beat, the session menu and the expanded premise with a typed action were captured as the three gameplay views on this page. Sprite scale, text contrast in dark and light themes, and the play link were verified before publishing.
Scene Backgrounds
BG
Your flat at night, seen toward the rain-streaked bay window: one amber lamp, a worn leather sofa, a chipped mug and an untouched plate on the sill, and an empty dog bed by the radiator. The only safe place he has — and the first home either of you has had in years.
BG
The town square at dusk in the rain: wet cobbles, the war memorial, the red telephone box, one orange streetlamp just coming on — and two dark-coated Ministry figures with umbrellas under the clock tower. This is where Meadows's hunt closes in and sheltering him stops being a private choice.
BG
The Prophet archive beneath the newspaper offices: iron shelves of yellowed broadsheets, a narrow aisle, one green-shaded lamp over an open ledger and dust in a single cold shaft of light. Twelve years of lies are catalogued in this room — including the witness whose name was never printed.
Asset Prompts
16:9 Key Art Promptgpt-image-2
"16:9 cinematic game cover key art for The Dog Star Pact, a wizarding-world fugitive romance from Handsome Men in the Galaxy. Keep the exact same man from the reference image: Sirius Black, a handsome fugitive wizard in his thirties with long tousled dark wavy hair, sharp cheekbones and intense grey eyes, wearing a worn black leather jacket over a dark shirt, rain-soaked. He stands on a rainswept London street at night under a wrought-iron streetlamp, a huge black dog with grey eyes sitting at his side, its head turned toward the viewer. Behind them the dark Thames embankment and gothic rooftops dissolve into cold blue rain haze; warm amber lamplight rims his hair and shoulders, wet cobblestones reflect the light. In the near foreground, over his shoulder, the blurred silhouette of a curtained window and a warm flat interior — the only place that ever let him stay. Refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly, cinematic anamorphic composition with clean negative space on the left for a title. Romantic, dangerous, restrained. No text, no labels, no letters, no typography, no watermark, no border."
"16:9 cinematic game cover key art for The Dog Star Pact, a wizarding-world fugitive romance from Handsome Men in the Galaxy. Keep the exact same man from the reference image: Sirius Black, a handsome fugitive wizard in his thirties with long tousled dark wavy hair, sharp cheekbones and intense grey eyes, wearing a worn black leather jacket over a dark shirt, rain-soaked. He stands on a rainswept London street at night under a wrought-iron streetlamp, a huge black dog with grey eyes sitting at his side, its head turned toward the viewer. Behind them the dark Thames embankment and gothic rooftops dissolve into cold blue rain haze; warm amber lamplight rims his hair and shoulders, wet cobblestones reflect the light. In the near foreground, over his shoulder, the blurred silhouette of a curtained window and a warm flat interior — the only place that ever let him stay. Refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly, cinematic anamorphic composition with clean negative space on the left for a title. Romantic, dangerous, restrained. No text, no labels, no letters, no typography, no watermark, no border."
Sirius Black Portrait Promptgpt-image-2
"Sirius Black, He does not pull you out of trouble — he pulls you deeper into the shelves, close enough to hear him breathe, and calls it the only kind of night worth running from. Portrait. No text, no labels, no letters, no signage anywhere."
"Sirius Black, He does not pull you out of trouble — he pulls you deeper into the shelves, close enough to hear him breathe, and calls it the only kind of night worth running from. Portrait. No text, no labels, no letters, no signage anywhere."
Your Flat Background Promptgpt-image-2
"16:9 cinematic scene background, the interior of a small shabby London flat at night, seen from the living room toward a rain-streaked bay window. One warm amber lamp, a worn sofa with a folded blanket, a chipped mug and an untouched plate of food on the sill, a black dog's empty spot by the radiator, rain running down the glass, the cold blue streetlamp glow outside and the silhouette of gothic rooftops. No people, no animals, no text, no labels, no signage. Cinematic wide establishing shot, clean uncluttered lower third for dialogue UI, refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. Quiet, safe, aching."
"16:9 cinematic scene background, the interior of a small shabby London flat at night, seen from the living room toward a rain-streaked bay window. One warm amber lamp, a worn sofa with a folded blanket, a chipped mug and an untouched plate of food on the sill, a black dog's empty spot by the radiator, rain running down the glass, the cold blue streetlamp glow outside and the silhouette of gothic rooftops. No people, no animals, no text, no labels, no signage. Cinematic wide establishing shot, clean uncluttered lower third for dialogue UI, refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. Quiet, safe, aching."
Town Square Background Promptgpt-image-2
"16:9 cinematic scene background, a small English town square at dusk in the rain, seen from under the awning of a corner shop. Wet cobblestones, a stone war memorial, iron railings, a red telephone box, shuttered shopfronts, one orange streetlamp just coming on, thin mist, puddles holding cold blue sky. In the far background, barely visible, two dark-coated Ministry figures with umbrellas standing under the clock tower. No close people, no text, no labels, no signage, no readable posters. Cinematic wide shot, clean uncluttered lower third for dialogue UI, refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. Tense, watched, ordinary."
"16:9 cinematic scene background, a small English town square at dusk in the rain, seen from under the awning of a corner shop. Wet cobblestones, a stone war memorial, iron railings, a red telephone box, shuttered shopfronts, one orange streetlamp just coming on, thin mist, puddles holding cold blue sky. In the far background, barely visible, two dark-coated Ministry figures with umbrellas standing under the clock tower. No close people, no text, no labels, no signage, no readable posters. Cinematic wide shot, clean uncluttered lower third for dialogue UI, refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. Tense, watched, ordinary."
Prophet Archive Background Promptgpt-image-2
"16:9 cinematic scene background, the basement archive of a wizarding newspaper at night: towering iron shelves packed with yellowed newspapers, rolled broadsheets and labelled boxes, a narrow aisle, a single green-shaded desk lamp over an open ledger on a lectern, dust suspended in a cold shaft of light from a high grating, the rest of the room in deep organized shadow. No people, no text, no readable headlines, no labels, no signage. Cinematic wide shot, clean uncluttered lower third for dialogue UI, refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. Secretive, papery, twelve years of lies."
"16:9 cinematic scene background, the basement archive of a wizarding newspaper at night: towering iron shelves packed with yellowed newspapers, rolled broadsheets and labelled boxes, a narrow aisle, a single green-shaded desk lamp over an open ledger on a lectern, dust suspended in a cold shaft of light from a high grating, the rest of the room in deep organized shadow. No people, no text, no readable headlines, no labels, no signage. Cinematic wide shot, clean uncluttered lower third for dialogue UI, refined semi-realistic painterly, value-defined contours, organized shadow planes, warm translucent midtones, small controlled speculars, idol semi-3D painterly. Secretive, papery, twelve years of lies."
Why Choose Neta Studio
Professional — a cloud harness runs the whole production from world building to story direction to publishing, with no local setup. Stable access to the latest models: GPT Image 2 · BiRefNet · deepseek-v4-flash.
One-click generation — officially tuned skills drive every step: world building, roleplay drafting, key art and scene painting, transparent cut-outs, in-browser visual QA and one-click publishing, with world fork and resource sharing built in — so every sprite, scene and prompt in this route is reusable in your own world.
Community-first — users build unlimited worlds, and every public world can be forked, remixed and reimagined. Start from this rainy street, or begin fresh from any idea — a one-line prompt is enough.
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The Dog Star Pact was generated by Neta Studio AI from a single world prompt — the world took minutes, the route and the artwork took minutes. You can do it too — adapt this world or start fresh from any idea. No coding required, free to start.
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